Carbureter.



v No. 021,081. PATBNTED MAY 2z, 1900.-

P. H. BRENNAN.

CARBURETER. APPLIOATION FILED 030.12. 1004.

PATRICK' H. BRENNAN, OF SYRAOUSE, NEW YORK.

CARBURETER.

lSpecification o/t; Letters Patent.

Patented May 22, 1906.

Application'ledDocembercl.1904. Serial No. 236,555.

T all whom it may concern:

Be it known that I, PATRICK H. BRENNAN,

a citizen of the United States, residing at Syracuse, in the county of Onondaga and State of New York, have invented certain new 'and useful Improvements, in Carbureters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe artA to which it appertains to make and use the same.

1n a slngle piece and My invention relates to carbureters for explosive-engines; and it consists in a new construction and arrangement of parts by which the'liquid fuel is purified and filtered, its flow regulated, and the admission of the air regulated and controlled so as to be proportioned to the gasolene or other liquid fuel.

A practical and desirable embodiment of my invention is represented in the accom-panying drawings, in which the reference-nu-l merals of the s ecification indicate similar parts in all the gures.

Figure I is a front elevation of a suitable form of device, showing my invention. Fig. II 'is a vertical section arallel to the elevation of Fig. I. Fig. II is a top plan. Fig. IV is a plan With certain parts removed. Fi V is taken at a right angle to Fig. III and 1s practically an elevation to illustrate the position and operation of the air-valve.

In the figures, 1 indicates the shell, formed rovided with floatchamber 2, inlet-channe 3, and mixing-chamber 4. In the float-chamber is a guide 6 for the stem 7 of ioat S, carrying above the needle-valve 10, fitting the elon ated feedchannel 11 in a column 12 in t e filtering top or filter 1'3, threaded to fit the upper margin of the float-chamber and to form a cover therefor. This filter is provided with an inlet 15 for the liquid fuel sup lied through pipe 14 and a blow-off 16, to w -ch is fitted petcock 17 for drawing 0H refuse, foreign matter, &c. In the upper portion of. its chamber 20 is arranged a fine-meshed strainer 21, fitting around and below the upper end of the column formed to receive it. A threaded cover 22, provided with projection 23 for wrench, closes the filtering-chamber.

25 is a vent fitted with spring-valve 26, inclosed in tube or case 27, so as to protect 'parts from dust, &C.,`which would tend to` 'clog the valve. .A

The gasolene enters the' bottom of the filter and passes up through the strainer or screen by which the water, oil, grease, dirt, &c., are retained and can be drawn off through the petcock. The gasolene flows down through `the feed-channel and, being filtered, a practically perfect operation ofthe float and carbureter it insured.

From the bottom of the float-chamber the gasolene passes through inlet-channel 3 to mixing-chamber 4, where its admission is contrdlled by controlling-valve 32, whose valve-stem 34, having one or more flattened portions, fits seat 1n the inlet, and whose valve-rod 36 is threaded to lit within the tubular stem 40 of the throttle-valve 41 and carries on its' outer end arm 37, to which is connected lever 3 8, arranged conveniently to the hand of the operator, whereby the controlling-valve may be adjusted up or down with reference to its scatto control the amount of gasolene admitted. T his valve is provided with the ribbed' conical portion to break up and atomize the indrawn liquid fuel and with a slot on the outer end of its rod to permit easy adjustment bythe screw-driver.

'lhrottle-valve 41 is provided with port 42 and is adapted to be turned by' its arm. 44 and lever 4() to regulate the llow of the explosive mixture through vapor-outlet 43 into the cylinder. This arm 44 is provided with anextension or tail 45 to engage with stoplugs 46 46 on the shell to limit the throw of the valve and to notify the operator that the limit has been reached. This arm is also provided with cross-piece 4S, curved, as here shown, or of other suitable shape, carrying two stops 49 49 to engage with arm 3T on controlling-vulve rod and limit the movement of said controlling or mixing valve to avoid excessive movement of the controlling-v valve and the admission of an amount i liquid fuel decidedly too large or Loo smah. The mixed vapor is delivered through port 42 and outlet 43 in extension 75, to which pipe is attached.

Journaled in bearings adjacent to air-inlet 5() is the nir-valve 5l. which is' adapted to regulate' the admission oi' air according to dill'crent altitudes and size and speed of engine. This valve may desirnbly bc of shutter form and provided with crank 53, pivotally connected by connection .34 and collar 5G to sliding lrod 57, sliding in ears 58, which may be cast integral on exterior of shell. This connection may be adjusted on said sliding rod by said collar, 'provided with usual `clampingbolt, to adjust the position of IOO IIO

' end o5 slidingv rod and forcing it down. It .is

desirable that the air-valve and throttlevalve-operate simultaneously,because, for.

instance, when running slow a part of the air lshould be cutof-or the mixture would be too lets in its lower portiona'nd a vapor-outlet in! vweak; l l A l lI do not Wish to limit myself strictly to the vstructure* heref'shown, as changes 'may be made in thejform and arrangement ofthe various parts .without .departing from the spirit and scope of my invention. t

I-Iaving thus described my invention, what 'I claim as new, and desire to secure byLetters i atent, isv l v1. In a carburete'r for a gas-engine, the combination with a suitable shell inclosing a vmixing-'chamber havinggasolene andair initsupper portion, of a shutter air-valve journaled lacross'the air-inlet, an external crank on said air-valve, a sliding rod arranged in bearings. on the shell, a connection between said rod and said. crank, a spring engaging with the rod to hold the valve operi,a throttlc-valve in the mixing-chamber controlling vthe vapor-outlet, an outwardly-extending stem on the throttle-valve and an eccentric Vcam connected to saidk stem and engaging with the sliding rod to voperate said valves simultaneously.

2. In a carbureter for a gas-engine, a mixing-chamber shell .provided with an inletchannel and an air-inlet in its lower portion and a vapor-outlet in its upper portion, and in combination therewith a throttle-valve arrangedl within the mixing-chamber and having a port to register with the vapor-outlet, a tubular stem on the throttle-valve outwardly extending through the top orn the chamber, an arm secured to the outer end of said stem, a tail on said arm, stop-lugs on the shell to enga ev with said tail and lim-it the movement o the throttle-valve, stops on said arm, a controlling-valve arranged in the mixing-chamber, to control the admission of the Gasolene throu h the inlet, a valve-rod on the throttle-va ve extending outwardly through said tubular stem, said rod being threaded to engage with the interior of said stem, a second' arm secured to the outer end of said valve-rod and arranged between the stops on the rst arm.

3. `In a carbureter for a gas-engine, a mixing-chamber shell yprovided with an inletchanneland an air-inlet in its lower portion. and a vapor-outlet in its upper portion, and 1n combination therewith an air-valve jours21,oa1

naled in the air-inlet to control the supply of air, an external crank on the air-valve, a vertical sliding rod, fitted to ears on the exterior ofthe shell, a collar adjustably fitted to said rod, a spiral spring arranged around the rod between the collar and one ear `to hold the rod up and the valve open, a connection con-v necting said crank and collar, a throttle-valve fitted to the enlarge'dupper portion of the mixing-chamber and having a portfto register with the vapor-outlet, a tubular stem on the throttle-valve outwardly extending through the topl of the chamber, 4an arm secured to the outer end of said stem, an eccentric cam on said arm to engage with said sliding rod and force it downwardly to close the air-valve, more or less, simultaneously with the. throttle-valve, a controlling-valve arranged in the mixing-chamber to control the admission of gasolene,.a valve-rod on the controlling-valve extending outwardly through said tubular stem, said rod being threaded to engage with the interior of said stem, and a second arm secured to the outer end of said valve-rod. v- .4. In a carbureter for a gas-engine, a mixing-chamber shellv provided with an inletchannel. and an air-inlet in its lower portion and a vapor-'outlet in its upper portion, and in combination an air-valve to control the su ply of air through the air-inlet, a throttleva Ve tted to the enlarged upper portion of y the mixing-chamber and having a port ."to register with the va or-outlet, a tubular stem on the throttle-va ve outwardly extending through the top of the chamber, an arm secured to the outer end of said stem, a lever connected to said arm, a tail on said arm,

sto -lu s on the shell to engage with said tail an limit the movement ofthe throttle-valve, a curved cross-piece on said armghavingan upwardly-extending stop ateach end, a connection between said arm andthe air-valve to operate theA air-valve simultaneously with the throttle-valve, a controlling-valve longitudinally arranged in the mixing-chamber loo and having a stem fitting aseat in the'v upper end of the inlet, a ribbed conical portion 1mmediately above said stem and a valve-rod extending outwardly through said tubular stem, said. rod being threaded to engage with thel interior of said stem and a second arm secured to the outer end of said valve-rod and arranged between thesto s on the rst arm, substantially as describe and shown.

5. In a carbureter for a gas-engine, theA combination with a mixing-chamber shell having gasolene and air inlets and a vaporoutlet, a valve for the air-inlet, a slidin rod connected to said valve whereby the va ve lis controlled, a throttle-valve for the outlet, a cam on the throttle-valve en aging with said rod whereby the valves are c osed simultaneously, and a controlling-valvefor the oil-inlet. A

6. In a carbureter for a gas-engine, the

combination with a mixin -chanibei shell having oil and air inlets an a vapor-outlet, of an air-valve controlling the air-inlet, a rod tted to slide in external bearings on the shell and connected to the air-valve, a throttie-valve for the vapor-outlet, an eccentric cam on the throttle-valve engaging with said rod, a lever connected to the throttle-valve y whereb said valves are closed simultaneously and a p unger-valve for the oil-inlet.

7. In a carburetor for a gas-en' ine7 the combination with a mixing-chain er shell having oil and air inlets and a vapor-outlet, of an air-valve journaled across the air-inlet, a rod fitted to slide in bearings and connected to said valve, a spring tending to open said valve, a throttle-valve for the outlet, an eccentric cam connected to the throttle-valve and engaging with said rod, whereby the valves are operated simultaneously,- and a plunger-valve for the oil-inlet.

up and the valve open, a connection conneot ing said crank and collar, a throttle-valve iitted to the enlarged upper portion of the mixing-chamb er and having a p ortto register with the vapor-outlet, a tubular stem on the throte tle-valve`outwardly extending through the top of the chamber, an arm secured to the outer end of said stem, a lever connected to said arm, an extension or tail on said arm, stop-lugs on the shell to engage with said extension or tail and limit the movement of the throttle-valve, a curved cross-piece on said arm having an upwardly-extending stop at each end, a cani on said arm to engage with said sliding rodand force it downwardly to close the airvalve, more or less, simultaneously with the throttle-valve, a controllingvalve longitudinally arranged in the mixingchamber, and having a stem iitting a seat in the upper end of the inlet, a ribbed conical portion immediately above said stein and a valvero`d extending outwardly through said tubular stein, said rod being threaded to engage with the interior of said stem and having a slot on its outer end, a second arm secured to the outer end of said valve-rod and arrange between the stops on the first arm, and a lever attached to said second arm, substantially as described and shown.

in testimony whereol' I a'fhx my signature in presence of two witnesses.

PATRICK H, BRENNAN'.

Witnesses:

MARGARET HARniNo'roN, C. C. SorionNnoK. 

